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2022 Cartographic Boundary File (SHP), Current Tribal Block Group for United States, 1:500,000

Metadata Updated: December 14, 2023

The 2022 cartographic boundary shapefiles are simplified representations of selected geographic areas from the U.S. Census Bureau's Master Address File / Topologically Integrated Geographic Encoding and Referencing (MAF/TIGER) Database (MTDB). These boundary files are specifically designed for small-scale thematic mapping. When possible, generalization is performed with the intent to maintain the hierarchical relationships among geographies and to maintain the alignment of geographies within a file set for a given year. Geographic areas may not align with the same areas from another year. Some geographies are available as nation-based files while others are available only as state-based files.

A tribal block group is a cluster of census tabulation blocks within a single tribal census tract delineated by American Indian tribal participants or the Census Bureau for the purpose of presenting demographic data on their reservation and/or off-reservation trust land. The tribal block groups are defined independently of the standard county-based block group delineation. For federally recognized American Indian Tribes with reservations and/or off-reservation trust lands with a population less than 1,200, a single tribal block group is defined. Qualifying reservations and/or off-reservation trust lands with a population greater than 1,200 could define additional tribal block groups within their area without regard to the standard block group configuration. Tribal block groups do not necessarily contain tabulation blocks always beginning with the same number and could contain seemingly duplicate block numbers. Tabulation block numbers are still assigned by using standard block groups, not the tribal block groups. To better identify tribal block groups, the letter code range A through K (except I, which could be confused with a number 1) is used uniquely within each tribal census tract.

The generalized boundaries of tribal block groups are based on those delineated through the Participant Statistical Areas Program (PSAP) for the 2020 Census.

Access & Use Information

License: No license information was provided. If this work was prepared by an officer or employee of the United States government as part of that person's official duties it is considered a U.S. Government Work.

Downloads & Resources

Dates

Metadata Date 2023-04
Metadata Created Date June 2, 2023
Metadata Updated Date December 14, 2023
Reference Date(s) 2023-04 (publication), 2023-04 (creation), 2023-04 (lastUpdate)
Frequency Of Update notPlanned

Metadata Source

Harvested from Cartographic Boundary Files - 2022

Additional Metadata

Resource Type Dataset
Metadata Date 2023-04
Metadata Created Date June 2, 2023
Metadata Updated Date December 14, 2023
Reference Date(s) 2023-04 (publication), 2023-04 (creation), 2023-04 (lastUpdate)
Responsible Party U.S. Department of Commerce, U.S. Census Bureau, Geography Division, Customer Engagement Branch (Point of Contact)
Contact Email
Guid cb_2022_us_tbg_500k.shp.iso.xml
Access Constraints Access_Constraints: None, Use Constraints: The intended display scale for this file is 1:500,000. This file should not be displayed at scales larger than 1:500,000. These products are free to use in a product or publication, however acknowledgement must be given to the U.S. Census Bureau as the source. The boundary information is for visual display at appropriate small scales only. Cartographic boundary files should not be used for geographic analysis including area or perimeter calculation. Files should not be used for geocoding addresses. Files should not be used for determining precise geographic area relationships.
Bbox East Long 179.77847
Bbox North Lat 71.365162
Bbox South Lat -14.548699
Bbox West Long -179.148909
Coupled Resource
Frequency Of Update notPlanned
Harvest Object Id 35997024-5d97-4664-adbc-7c23da18c919
Harvest Source Id c5dab8f1-9779-4275-a5fd-9b2cf47696fc
Harvest Source Title Cartographic Boundary Files - 2022
Licence
Lineage
Metadata Language eng; USA
Metadata Type geospatial
Old Spatial {"type": "Polygon", "coordinates": [[[-179.148909, -14.548699], [179.77847, -14.548699], [179.77847, 71.365162], [-179.148909, 71.365162], [-179.148909, -14.548699]]]}
Progress completed
Spatial Data Service Type
Spatial Reference System urn:ogc:def:crs:EPSG::4269
Spatial Harvester True

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